Brainscape's Knowledge GenomeTM

Browse over 1 million classes created by top students, professors, publishers, and experts.


See full index

CC > CC DAY-2 > Flashcards

CC DAY-2 Flashcards

1
Q

Process by which lab ensures quality results by closely monitoring pre-analytical, analytical and post-anal. stages of testing

A

Quality assessment/assurance

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
2
Q

Everything that precedes test performance

A

Pre-analytical

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
3
Q

everything that related to assay

A

analytical

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
4
Q

everthing that comes after test analysis

A

post-analytical

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
5
Q

all the labs policies, processes, procedures, and resources needed to achieve quality testing

A

quality system

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
6
Q

announced that a periodic performance review (PPR) will be required for the laboratory accreditation program

A

The Joint Commission

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
7
Q

part of analytical phase of quality assurance

A

quality control

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
8
Q

system ensuring daily accuracy and precision in the lab by including quality control reagents in every series of measurements

A

intralab/interlab QC

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
9
Q

long term accuracy of results from lab by comparing lab results from other labs

A

interlab QC

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
10
Q

process of testing and adjusting analyzers readout to establish correlation between measured and actual concentrations.

A

calibration

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
11
Q

formerly called standard.
this is a reference material with known concentration of analyte

A

calibrator

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
12
Q

when will CALIBRATION VERIFICATION required?

A

every 6 months when lot no of reagents changes, following preventive maintenance or repair, and when controls are out of change.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
13
Q

measures of dispersion (3)

A

standard deviation
coefficient of variation
range

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
14
Q

difference between highest and lowest values in data set

A

range

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
15
Q

sum of all observations
average of all observations

A

mean

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
16
Q

statistical expression of dispersion of values around mean. requires min. 20 values

A

standard deviation

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
17
Q

expresses standard deviation as percentage

A

coefficient of variation

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
18
Q

QC CONTROL CHART

a population probability distribution that is symmetric about the mean

a.CUSUM
b. Gaussian Curve
c. Youden/Twin Plot
d. Shewart levey-jennings charts

A

Gaussian Curve

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
19
Q

QC CONTROL CHART

calculates difference between QC results and the target means.

a.CUSUM
b. Gaussian Curve
c. Youden/Twin Plot
d. Shewart levey-jennings charts

A

CUSUM- Cumulative sum graph

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
20
Q

QC CONTROL CHART

earliest indication of systematic error specifically SHIFTS

a.CUSUM
b. Gaussian Curve
c. Youden/Twin Plot
d. Shewart levey-jennings charts

A

CUSUM- Cumulative sum graph

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
21
Q

QC CONTROL CHART

used to compare results obtained on a high and low control serum from different labs

a.CUSUM
b. Gaussian Curve
c. Youden/Twin Plot
d. Shewart levey-jennings charts

A

c. Youden/Twin Plot

22
Q

QC CONTROL CHART

most widely used
easily identifies random and systematic errors

a.CUSUM
b. Gaussian Curve
c. Youden/Twin Plot
d. Shewart levey-jennings charts

A

d. Shewart levey-jennings charts

23
Q

6 consecutive control values on same side of the mean

A

shift

24
Q

main cause of SHIFT

A

improper calibration

25
Q

control values increasing or decreasing for 6 consecutive runs

A

trend

26
Q

main cause of TREND

A

deterioration of reagents

27
Q

Random error AKA

A

indeterminate, unpredictable, Imprecision

28
Q

error that doesnt recur in regular pattern due to environmental or operator conditions

a. random error
b. systematic error

A

a

29
Q

electro-optical mechanism

a. random error
b. systematic error

A

a

30
Q

13s and r4s westgard rule

a. random error
b. systematic error

A

a

31
Q

Systematic error AKA

A

determinate, predictable, inaccuracy

32
Q

recurring error inherent in test procedure, observations consistently in one direction

a. random error
b. systematic error

A

b

33
Q

optical changes

a. random error
b. systematic error

A

b

34
Q

how close measurement is to the true value

A

accuracy

35
Q

reproducibility

A

precision

36
Q

how close results are when same sample is tested multiple times

A

precision

37
Q

formerly called normal value

A

reference interval

38
Q

reference interval is established by testing minimum of _____________ subjects

A

120 healthy indiv.

39
Q

lowest concentration of substances that can be detected by test method

a. analytical sensitivity
b. analytical specificity

A

a

40
Q

Desirable in screening tests

a. analytical sensitivity
b. analytical specificity

A

a

41
Q

ability of method to measure only the analyte its supposed to measure and not other related substances

a. analytical sensitivity
b. analytical specificity

A

b

42
Q

desirable in confirmatory tests

a. analytical sensitivity
b. analytical specificity

A

b

43
Q

% of population WITH the disease that test POSITIVE

a. diagnostic sensitivity
b. diagnostic specifity
c. PPV
d. NPV

A

a

44
Q

% of population WITHOUT the disease that test NEGATIVE

a. diagnostic sensitivity
b. diagnostic specifity
c. PPV
d. NPV

A

b

45
Q

% of time that a positive result is correct

a. diagnostic sensitivity
b. diagnostic specifity
c. PPV
d. NPV

A

c

46
Q

% of time that a negative result is correct

a. diagnostic sensitivity
b. diagnostic specifity
c. PPV
d. NPV

A

d

47
Q

monitoring and diagnosis of disease/ measures of diagnostic efficiency (4)

A

diagnostic sensitivity
diagnostic specifity
PPV
NPV

48
Q

in correlation study, it requires a minimum of _______ samples

A

40 patient samples

49
Q

critical values include what tests? (9)

A

glucose
sodium
potassium
magnesium
calcium
phosphorus
total CO2
blood gases
total biliribun (in neonates)

50
Q

testing of unknowns submitted by outside agency.
results reported to agency, which compares them to results from other labs

A

Proficiency testing

51
Q
A

CC (8 decks)

Brainscape helps you reach your goals faster, through stronger study habits.
© 2024 Bold Learning Solutions. Terms and Conditions